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It is best to choose background colors that offer sufficient contrast in relation to text and blue links, which is also the color of references, both of which are very common in most articles. Use the WCAG link contrast checker to ensure that the chosen background color offers the recommended WCAG AA level of contrast against normal text ...
Colour Contrast Check G18: Ensuring that a contrast ratio of at least 4.5:1 exists between text (and images of text) and background behind the text Index of Color Contrast Samples
An example of how text with low colour-contrast appear to someone with the commonest form of colour-blindness, red/green. If you have default settings on Wikipedia, and are reading this page on a screen, then you probably can't read the following: This is a secret message. because it has blue text on a blue background.
This is useful for selecting a foreground/background color pair. ... reduces contrast-check. A bias of 1.25, reduces the possible minimum to 4.0, which may not meet ...
A guide on using colors in web design and development, covering color theory, accessibility, and practical applications.
1.1 Examples with light background. 1.2 Examples with dark background. 2 WCAG 2.0. 3 See also. Toggle the table of contents. Template: Color contrast ratio/sandbox ...
For the heading background, the saturation is 15% and brightness is 95%. For the heading border, the saturation is 15% and brightness is 75%. For the box background, the saturation is 4% and brightness is 100%. For the ITN/OTD sections, the saturation and brightness scheme is the same as above, but the hue (color) is different.
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